Destruction of the organic substances by digestion with a sulpho-nitric mixture and conversion of phosphates to orthophosphates. Formation of a phosphomolybdate. Measurement of the intensity of the blue colour at a wavelength of 825 nm. The method applies to contents up to 5 % (m/m).
Status: PublishedPublication date: 1982-12
Edition: 1Number of pages: 3
Technical Committee: ISO/TC 93 Starch (including derivatives and by-products)
Buy this standard
|std 1 38|
|std 2 38||Paper|